[Induced hypertensive chemotherapy with angiotensin II found effective for mediastinal lymph node metastases of unknown origin].

A 62-year-old woman suffering from gallbladder stone had a remarkably high preoperative CEA level of 525 ng/ml. Computed tomography revealed swollen mediastinal lymph nodes. Lymph node biopsy during thoracotomy led to a diagnosis of metastasis from poorly differentiated adenocarcinoma. Although thorough examinations were performed, the origin of the adenocarcinoma could not be detected. In this case, induced hypertensive chemotherapy with angiotensin II was effective. The mediastinal lymph nodes diminished remarkably and the patient's CEA level decreased to 22 ng/ml. Induced hypertensive chemotherapy with angiotensin II might be a useful treatment for cancer metastases of unknown origin.